chore: Enable GCI for golangci-lint (kubeflow#2540)

Signed-off-by: Yuki Iwai <yuki.iwai.tz@gmail.com>

Author: tenzen-y

.golangci.yaml

@@ -0,0 +1,18 @@
+# golangci-lint configuration file
+# see: https://golangci-lint.run/usage/configuration/
+
+# Settings of specific linters
+linters-settings:
+  gci:
+    sections:
+    - standard # Standard section: captures all standard packages.
+    - default # Default section: contains all imports that could not be matched to another section type.
+    - prefix(github.com/kubeflow/trainer) # Custom section: groups all imports with the specified Prefix.
+    - blank # Blank section: contains all blank imports. This section is not present unless explicitly enabled.
+    - dot # Dot section: contains all dot imports.
+    skip-generated: true # Skip generated files.
+
+# Settings for enabling and disabling linters
+linters:
+  enable:
+  - gci

pkg/controller/trainjob_controller.go

@@ -22,7 +22,6 @@ import (
 	"fmt"
 
 	"github.com/go-logr/logr"
-	"github.com/kubeflow/trainer/pkg/constants"
 	"k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -38,6 +37,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/controller"
 
 	trainer "github.com/kubeflow/trainer/pkg/apis/trainer/v1alpha1"
+	"github.com/kubeflow/trainer/pkg/constants"
 	jobruntimes "github.com/kubeflow/trainer/pkg/runtime"
 )
 

pkg/runtime/framework/plugins/mpi/mpi.go

@@ -28,7 +28,6 @@ import (
 	"strconv"
 
 	"golang.org/x/crypto/ssh"
-
 	corev1 "k8s.io/api/core/v1"
 	apiruntime "k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/intstr"

pkg/runtime/framework/plugins/mpi/mpi_test.go

@@ -25,7 +25,6 @@ import (
 
 	gocmp "github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/kubeflow/trainer/pkg/constants"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	apiruntime "k8s.io/apimachinery/pkg/runtime"
@@ -37,6 +36,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client/interceptor"
 
 	trainer "github.com/kubeflow/trainer/pkg/apis/trainer/v1alpha1"
+	"github.com/kubeflow/trainer/pkg/constants"
 	"github.com/kubeflow/trainer/pkg/runtime"
 	"github.com/kubeflow/trainer/pkg/runtime/framework"
 	utiltesting "github.com/kubeflow/trainer/pkg/util/testing"

pkg/runtime/framework/plugins/torch/torch.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"strings"
 
+	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/validation/field"
@@ -34,7 +35,6 @@ import (
 	"github.com/kubeflow/trainer/pkg/constants"
 	"github.com/kubeflow/trainer/pkg/runtime"
 	"github.com/kubeflow/trainer/pkg/runtime/framework"
-	corev1 "k8s.io/api/core/v1"
 )
 
 type Torch struct{}

pkg/runtime/runtime_test.go

@@ -26,10 +26,10 @@ import (
 	batchv1ac "k8s.io/client-go/applyconfigurations/batch/v1"
 	corev1ac "k8s.io/client-go/applyconfigurations/core/v1"
 	"k8s.io/utils/ptr"
+	jobsetv1alpha2ac "sigs.k8s.io/jobset/client-go/applyconfiguration/jobset/v1alpha2"
 
 	"github.com/kubeflow/trainer/pkg/constants"
 	jobsetplgconsts "github.com/kubeflow/trainer/pkg/runtime/framework/plugins/jobset/constants"
-	jobsetv1alpha2ac "sigs.k8s.io/jobset/client-go/applyconfiguration/jobset/v1alpha2"
 )
 
 func TestNewInfo(t *testing.T) {

pkg/util/testing/compare.go

@@ -22,8 +22,9 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
-	"github.com/kubeflow/trainer/pkg/constants"
 	corev1 "k8s.io/api/core/v1"
+
+	"github.com/kubeflow/trainer/pkg/constants"
 )
 
 var (

pkg/util/testing/wrapper.go

@@ -26,12 +26,12 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/utils/ptr"
+	jobsetv1alpha2 "sigs.k8s.io/jobset/api/jobset/v1alpha2"
+	schedulerpluginsv1alpha1 "sigs.k8s.io/scheduler-plugins/apis/scheduling/v1alpha1"
 
 	trainer "github.com/kubeflow/trainer/pkg/apis/trainer/v1alpha1"
 	"github.com/kubeflow/trainer/pkg/constants"
 	jobsetplgconsts "github.com/kubeflow/trainer/pkg/runtime/framework/plugins/jobset/constants"
-	jobsetv1alpha2 "sigs.k8s.io/jobset/api/jobset/v1alpha2"
-	schedulerpluginsv1alpha1 "sigs.k8s.io/scheduler-plugins/apis/scheduling/v1alpha1"
 )
 
 type JobSetWrapper struct {